diff --git a/common/app-support.rst b/common/app-support.rst
index 4329cfbe8..e75850a58 100644
--- a/common/app-support.rst
+++ b/common/app-support.rst
@@ -77,7 +77,7 @@ command-line clients:
 The following documentation provides reference and guidance information
 for the OpenStack APIs:
 
-*  `API Guide <http://developer.openstack.org/api-guide/quick-start/>`__
+*  `API Guide <https://developer.openstack.org/api-guide/quick-start/>`__
 
 The following guide provides how to contribute to OpenStack documentation: